ESS TECHNOLOGY INC

Q: Mar 31 2008

FY: Dec 31 2007

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

Q: Mar 31 2007

FY: Dec 31 2006

FY: Dec 31 2006

Q: Sep 30 2006

Q: Jun 30 2006

Q: Mar 31 2006

FY: Dec 31 2005

FY: Dec 31 2005

Q: Sep 30 2005

Q: Jun 30 2005

Q: Mar 31 2005

FY: Dec 31 2004

FY: Dec 31 2004

Q: Sep 30 2004

Q: Jun 30 2004

8.01,9.01

5.02,8.01,9.01

Results of Operations and Financial Condition

1.01,9.01

8.01,9.01

3.01,9.01

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Results of Operations and Financial Condition

1.01,8.01,9.01

3.01,9.01

1.02

1.01,2.01,2.02,9.01

1.01,2.03

1.01,2.03

5.02,9.01

Results of Operations and Financial Condition

5.02,9.01

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Results of Operations and Financial Condition

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Certification of termination of registration of a class of securities (Section 12(g))

Notification of removal from listing and/or registration on a national securities exchange

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement with Pricing Information

No description available

Registration statement under Securities Act of 1933 (amendment)

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

RENAISSANCE TECHNOLOGIES LLC

DIMENSIONAL FUND ADVISORS INC

LEE DAVID S

ALEXANDER BRUCE J

BLAIR ROBERT L

STEIN ALFRED J

MOK PETER T

Marsh John A

STEIN ALFRED J

MOK PETER T

LEE DAVID S

LEE DAVID S

CHAN SHIU LEUNG

BOYD JAMES

CHAN ANNIE M H

Chan Family Foundation

BLAIR ROBERT L

RENAISSANCE TECHNOLOGIES LLC

DIMENSIONAL FUND ADVISORS INC

Riley Investment Partners Master Fund, L.P.

06

No description available

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Annual Report Scanned (Paper)

Letter from the SEC

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)